This is a list of butterflies in the U.S. state of Maryland.

Papilionidae

• Eastern tiger swallowtail, Papilio glaucus
• Canadian tiger swallowtail, Papilio canadensis
• Zebra swallowtail, Eurytides marcellus
• Pipevine swallowtail, Battus philenor
• Spicebush swallowtail, Papilio troilus
• Black swallowtail, Papilio polyxenes
• Palamedes swallowtail, Papilio palamedes
• Giant swallowtail, Papilio cresphontes

Pieridae

• Cabbage white, Pieris rapae
• West Virginia white, Pieris virginiensis
• Checkered white, Pontia protodice
• Falcate orangetip, Anthocharis midea
• Olympia marble, Euchloe olympia
• Clouded sulphur, Colias philodice
• Orange sulphur, Colias eurytheme
• Pink-edged sulphur, Colias interior
• Sleepy orange, Abaeis nicippe
• Little yellow, Eurema lisa
• Cloudless sulphur, Phoebis sennae

Lycaenidae

Lycaenini

• American copper, Lycaena phlaeas
• Harvester, Feniseca tarquinius
• Bog copper, Lycaena epixanthe
• Bronze copper, Lycaena hyllus

Theclini & Eumaeini

• Gray hairstreak, Strymon melinus
• White M hairstreak, Parrhasius m-album
• Banded hairstreak, Satyrium calanus
• Hickory hairstreak, Satyrium caryaevorus
• Edward's hairstreak, Satyrium edwardsii
• King's hairstreak, Satyrium kingi
• Striped hairstreak, Satyrium liparops
• Northern oak hairstreak, Satyrium favonius ontario
• Coral hairstreak, Satyrium titus
• Red-banded hairstreak, Calycopis cecrops
• Brown elfin, Callophrys augustinus
• Henry's elfin, Callophrys henrici
• Frosted elfin, Callophrys irus
• Hoary elfin, Callophrys polios
• Eastern pine elfin, Callophrys niphon
• Great purple hairstreak, Atlides halesus
• Juniper hairstreak, Callophrys gryneus
• Hessel's hairstreak, Callophrys hesseli
• Early hairstreak, Erora laeta

Polyommatini

• Eastern tail-blue, Cupido comyntas
• Silvery blue, Glaucopsyche lygdamus
• Appalachian azure, Celastrina neglectamajor
• Dusky azure, Celastrina nigra

Riodinidae

• Little metalmark, Calephelis virginiensis
• Northern metalmark, Calephelis borealis

Nymphalidae

Heliconiinae

• Variegated fritillary, Euptoieta claudia
• Greater spangled fritillary, Speyeria cybele
• Aphrodite fritillary, Speyeria aphrodite
• Meadow fritillary, Boloria bellona
• Silver-bordered fritillary, Boloria selene

Nymphalinae

• Pearl crescent, Phyciodes tharos
• Phaon crescent, Phyciodes phaon
• Silvery checkerspot, Chlosyne nycteis
• Baltimore checkerspot, Euphydryas phaeton
• Question mark, Polygonia interrogationis
• Eastern comma, Polygonia comma
• Gray comma, Polygonia progne
• Compton tortoiseshell, Nymphalis vaualbum
• Milbert's tortoiseshell, Aglais milberti
• Mourning cloak, Nymphalis antiopa
• Red admiral, Vanessa atalanta
• American lady, Vanessa virginiensis
• Painted lady, Vanessa cardui
• Common buckeye, Junonia coenia
• Red-spotted purple, Limenitis arthemis
• Viceroy, Limenitis archippus
• Hackberry emperor, Asterocampa celtis
• Tawny emperor, Asterocampa clyton
• American snout, Libytheana carinenta
• Monarch, Danaus plexippus
• Queen, Danaus gilippus

Satyrinae

• Little wood-satyr, Megisto cymela
• Carolina satyr, Hermeuptychia sosybius
• Common wood-nymph, Cercyonis pegala
• Appalachian brown, Satyrodes appalachia
• Northern pearly-eye, Enodia anthedon

Hesperiidae

Pyrginae & Pyrrhopyginae

• Silver-spotted skipper, Epargyreus clarus
• Golden banded-skipper, Autochton cellus
• Hoary Edge, Achalarus lyciades
• Southern cloudywing, Thorybes bathyllus
• Northern cloudywing, Thorybes pylades
• Confused cloudywing, Thorybes confusis
• Long-tailed skipper, Urbanus proteus
• Juvenal's duskywing, Erynnis juvenalis
• Horace's duskywing, Erynnis horatius
• Dreamy duskywing, Erynnis icelus
• Sleepy duskywing, Erynnis brizo
• Wild indigo duskywing, Erynnis baptisiae
• Columbine duskywing, Erynnis lucilius
• Mottled duskywing, Erynnis martialis
• Common checkered-skipper, Pyrgus communis
• Hayhurst's scallopwing, Staphylus hayhurstii
• Common sootywing, Pholisora catullus

Heteropterinae & Hesperiinae

• Fiery skipper, Hylephila phyleus
• Sachem, Atalopedes campestris
• European skipper, Thymelicus lineola
• Least skipper, Ancyloxpha numitor
• Clouded skipper, Lerema accius
• Swarthy skipper, Nastra lherminier
• Cobweb skipper, Hesperia metea
• Leonard's skipper, Hesperia leonardus
• Indian skipper, Hesperia sassacus
• Long dash, Polites mystic
• Peck's skipper, Polites peckius
• Tawny-edged skipper, Polites themistocles
• Crossline skipper, Polites origenes
• Black dash, Euphyes conspicua
• Southern broken-dash, Wallengrenia otho
• Northern broken-dash, Wallengrenia egeremet
• Little glassywing, Pompeius verna
• Dun skipper, Euphyes vestris
• Hobomok skipper, Poanes hobomok
• Zabulon skipper, Poanes zabulon
• Mulberry wing, Poanes massasoit
• Broad-winged skipper, Poanes viator
• Aaron's skipper, Poanes aaroni
• Two-spotted skipper, Euphyes bimacula
• Dion skipper, Euphyes dion
• Delaware skipper, Anatrytone logan
• Rare skipper, Problema bulenta
• Dusted skipper, Atrytonopsis hianna
• Common roadside-skipper, Amblyscirtes vialis
• Pepper and salt skipper, Amblyscirtes hegon
• Ocola skipper, Panoquina ocola
• Salt marsh skipper, Panoquina panoquin

References

• Kaufman, Kenn; Brock, Jim P. (2003). Kaufman Field Guide to Butterflies of North America. Houghton Mifflin Company. ISBN  978-0-618-76826-4.